SY89296UMG

Overview

The SY89296UMG is a programmable delay line from the Precision Edge series, manufactured by Microchip Technology. It operates on a 2.5V ±5% or 3.3V ±10% power supply and supports frequencies up to 1.5GHz. The device provides a programmable delay range of 3.2ns to 14.8ns in 10ps increments via a 10-bit digital control word, with an additional 11th bit for cascading. An analog FTUNE pin allows for continuous fine-tuning within a 40ps/V range. It features LVPECL inputs and outputs, low jitter (<10ps PP total), and is housed in a 32-pin MLF package.

Feature Summary

• Features precision LVPECL programmable delay with guaranteed AC performance over temperature and voltage.
• Includes a dedicated FTUNE pin for continuous analog fine-tuning of the delay signal.
• Supports cascading via D10 bit to extend the total delay range beyond single-device limits.
• Accepts parallel control inputs compatible with LVPECL, CMOS, or LVTTL logic levels.

Applications

• Clock de-skewing
• Timing adjustments
• Aperture centering

Procurement Notes

Verify that the specific ordering suffix matches the required lead finish and packaging format. The 'MG' suffix indicates a Pb-Free package with NiPdAu finish. Confirm whether the TR suffix is needed for tape and reel delivery. Ensure the component meets RoHS compliance requirements for the target assembly process.

Selection Notes

Select the SY89296UMG when analog fine-tuning capability is required, distinguishing it from the SY89295U which lacks the FTUNE pin. Verify that the 3.2ns to 14.8ns delay range fits the design constraints. Ensure the system can accommodate the 32-pin MLF package dimensions and thermal requirements.

Part Context

This component belongs to Micrel’s high-speed Precision Edge product line, now managed by Microchip Technology. It serves as an enhanced version of the SY89295U by adding analog fine-tune control. The device is designed for high-frequency timing applications requiring precise delay adjustments.

Replacement Considerations

The SY89295U is a related part but lacks the FTUNE pin functionality. No direct public substitute part numbers are confirmed in the provided documentation.

FAQ

How does the SY89296UMG handle floating input pins?

The IN and /IN pins default to an equivalent low state if left floating. The D control bits also contain pull-downs and default LOW when left unconnected.

What is the function of the VBB pin?

The VBB pin provides an internally generated reference voltage. It is used to bias unused inputs when driving single-ended signals or to re-bias AC-coupled inputs to ensure they remain within the acceptable common mode range.

Can the device be cascaded to increase delay range?

Yes, the eleventh control bit (D10) is used to simultaneously cascade multiple SY89296U devices, extending the overall delay range without external gating.